I am new to Graphiti and I have started to use it by following the tutorial given in Graphiti help. I'm worried about the following issue that have disturbed my first editor :
After having create a new plugin with only Eclass element, I have tryed to visualise my editor (whose the domain model containing only "Eclass") by using "Run New configuration". This have opened a new
instance of eclipse, so I have my editor ready and I have tried it. However, there is errors on the console of the first instance of eclipse :

Hello,
I have checked the existance of feature.xml from the begining. That's why I have resorted to the forum.
Is there any specific launch configuration?
If not, could you tell me how I could restore the default configuration ? because I think I have tryed to change it quite a few times, to solve the problem